Look at the Rolify docs:
Multiple role checking Check if the user has ALL specified roles
user = User.find(1)
user.add_role :admin # sets a global role
user.add_role :moderator, Forum.first # sets a role scoped to a resource instance
user.add_role :visitor, Forum # sets a role scoped to a resource class
user.has_all_roles? :admin, { :name => :moderator, :resource => Forum.first }, { :name => :visitor, :resource => Forum }
=> true
user.has_all_roles? :admin, { :name => :moderator, :resource => Forum.last }
=> false
user.has_all_roles? :god, { :name => :visitor, :resource => Forum }
=> false
Check if the user has ANY of the specified role(s)
user = User.find(1)
user.add_role :admin # sets a global role
user.add_role :moderator, Forum.first # sets a role scoped to a resource
user.add_role :visitor, Forum # set a role scoped to a resource class
user.has_any_role? :admin, { :name => :moderator, :resource => Forum.first }, { :name => :visitor, :resource => Forum }
=> true
user.has_any_role? :admin, { :name => :moderator, :resource => Forum.last }
=> true
user.has_any_role? :god, { :name => :visitor, :resource => Forum }
=> true
So it looks like in your situation you want to use:
user.has_all_roles? :technician, {:name => :admin}